Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance
We study the symmetry of the coupling between surface acoustic waves (SAWs) and ferromagnetic resonance in a thin magnetic film of CoFeB deposited on top of a piezoelectric Z-cut LiNbO3 substrate. We vary the orientation of the applied magnetic field with respect to the wavevector of the SAW. Experi...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-04-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0253481 |
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| author | Florian Millo Rafael Lopes Seeger Claude Chappert Aurélie Solignac Thibaut Devolder |
| author_facet | Florian Millo Rafael Lopes Seeger Claude Chappert Aurélie Solignac Thibaut Devolder |
| author_sort | Florian Millo |
| collection | DOAJ |
| description | We study the symmetry of the coupling between surface acoustic waves (SAWs) and ferromagnetic resonance in a thin magnetic film of CoFeB deposited on top of a piezoelectric Z-cut LiNbO3 substrate. We vary the orientation of the applied magnetic field with respect to the wavevector of the SAW. Experiments indicate an unexpected twofold symmetry of the absorption of the SAW energy by the magnetic film. We discuss whether this symmetry can arise from the magnetoelastic torque of the longitudinal strain and the magnetic susceptibility of ferromagnetic resonance. We find that one origin of the twofold symmetry can be the weak in-plane uniaxial anisotropy present within the magnetic film. This phenomenon adds to the previously identified other source of twofold symmetry but shall persist for ultrathin films when the dipolar interactions cease to contribute to the anisotropy of the slope of the spin wave dispersion relation. |
| format | Article |
| id | doaj-art-bff2e1caa1574a9996153daf18cb2756 |
| institution | OA Journals |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-bff2e1caa1574a9996153daf18cb27562025-08-20T01:48:13ZengAIP Publishing LLCAIP Advances2158-32262025-04-01154045230045230-710.1063/5.0253481Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonanceFlorian Millo0Rafael Lopes Seeger1Claude Chappert2Aurélie Solignac3Thibaut Devolder4Université Paris-Saclay, C2N, CNRS, 91120 Palaiseau, FranceSPEC, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, FranceUniversité Paris-Saclay, C2N, CNRS, 91120 Palaiseau, FranceSPEC, CEA, CNRS, Université Paris-Saclay, 91191 Gif-sur-Yvette, FranceUniversité Paris-Saclay, C2N, CNRS, 91120 Palaiseau, FranceWe study the symmetry of the coupling between surface acoustic waves (SAWs) and ferromagnetic resonance in a thin magnetic film of CoFeB deposited on top of a piezoelectric Z-cut LiNbO3 substrate. We vary the orientation of the applied magnetic field with respect to the wavevector of the SAW. Experiments indicate an unexpected twofold symmetry of the absorption of the SAW energy by the magnetic film. We discuss whether this symmetry can arise from the magnetoelastic torque of the longitudinal strain and the magnetic susceptibility of ferromagnetic resonance. We find that one origin of the twofold symmetry can be the weak in-plane uniaxial anisotropy present within the magnetic film. This phenomenon adds to the previously identified other source of twofold symmetry but shall persist for ultrathin films when the dipolar interactions cease to contribute to the anisotropy of the slope of the spin wave dispersion relation.http://dx.doi.org/10.1063/5.0253481 |
| spellingShingle | Florian Millo Rafael Lopes Seeger Claude Chappert Aurélie Solignac Thibaut Devolder Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance AIP Advances |
| title | Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance |
| title_full | Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance |
| title_fullStr | Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance |
| title_full_unstemmed | Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance |
| title_short | Symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance |
| title_sort | symmetry of the dissipation of surface acoustic waves by ferromagnetic resonance |
| url | http://dx.doi.org/10.1063/5.0253481 |
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